I’m pretty sure it’s -15 but don’t take my word for it
        
             
        
        
        
Answer:
(-5,-3)
Step-by-step explanation:
y values minus y values over x values minus x values 
 
        
             
        
        
        
Answer:
$390
Step-by-step explanation:
The wage rate for Kailyn is ($146.25/15 hours) = $9.75/hour
40 hours would result in:
(40 hours)*($9.75/hour) = $390
 
        
             
        
        
        
Answer:
Week 4
Step-by-step explanation:
Ben has $250 in the beginning.  He saves $150 per week.
y = 150x + 250
Tim has $1,650 in the beginning.  He spends $200 per week.
y = 1650 - 200x
We are trying to find which x-value produces the same y-value for both equations.  You can do this by setting both equations equal to each other.
150x + 250 = 1650 - 200x
(150x + 250) + 200x = (1650 - 200x) + 200x
350x + 250 = 1650
(350x + 250) - 250 = (1650) - 250
350x = 1400
(350x)/350 = (1400)/350
x = 4
By week 4, they will have the same amount of money.